Model | RD40x16H | RD50x16H | RD50x20H |
Clamping type | Hydraulic lock | ||
Max. drilling capacity (mm) | 40 (1.57”) | 50 (1.97”) | 50 (1.97”) |
Distance from spindle axis to column line (mm) | 350-1600 (13.8”-63”) |
350-1600 (13.8”-63”) |
350-2000 (13.8”-78.7”) |
Diameter of column (mm) | 350 (13.8”) | 350 (13.8”) | 350 (13.8”) |
Spindle taper | MT-4 | MT-5 | MT-5 |
Spindle travel (mm) | 315 (12.4”) | 315 (12.4”) | 315 (12.4”) |
Spindle speeds range (r/min) | 25-2000 | 25-2000 | 25-2000 |
Spindle speeds steps | 16 | 16 | 16 |
Range of spindle feeds (r/min) | 0.04-3.2 | 0.04-3.2 | 0.04-3.2 |
Spindle feeds steps | 16 | 16 | 16 |
Max. distance from spindle nose to working surface of base (mm) | 350-1250 (13.8”-49.2”) | 320-1220 (12.6”-48”) | 320-1220 (12.6”-48”) |
Dimension of worktable (mm) | 630x500x500 | 630x500x500 | 630x500x500 |
Dimension of base (mm) | 2400x1000x200 | 2400x1000x200 | 2400x1000x200 |
Overall size (mm) | 2500x1060x2650 | 2500x1060x2650 | 2900x1060x2650 |
Power of main motor (kW) | 3 | 4 | 4 |
Gross weight / net weight (kg) | 3650/3400 | 3650/3400 | 3850/3550 |
Packing dimension (mm) | 2600x1120x2600 | 2600x1120x2600 | 3000x1120x2600 |
Model | RD40x16H | RD50x16H | RD50x20H |
Clamping type | Hydraulic lock | ||
Max. drilling capacity (mm) | 40 (1.57”) | 50 (1.97”) | 50 (1.97”) |
Distance from spindle axis to column line (mm) | 350-1600 (13.8”-63”) |
350-1600 (13.8”-63”) |
350-2000 (13.8”-78.7”) |
Diameter of column (mm) | 350 (13.8”) | 350 (13.8”) | 350 (13.8”) |
Spindle taper | MT-4 | MT-5 | MT-5 |
Spindle travel (mm) | 315 (12.4”) | 315 (12.4”) | 315 (12.4”) |
Spindle speeds range (r/min) | 25-2000 | 25-2000 | 25-2000 |
Spindle speeds steps | 16 | 16 | 16 |
Range of spindle feeds (r/min) | 0.04-3.2 | 0.04-3.2 | 0.04-3.2 |
Spindle feeds steps | 16 | 16 | 16 |
Max. distance from spindle nose to working surface of base (mm) | 350-1250 (13.8”-49.2”) | 320-1220 (12.6”-48”) | 320-1220 (12.6”-48”) |
Dimension of worktable (mm) | 630x500x500 | 630x500x500 | 630x500x500 |
Dimension of base (mm) | 2400x1000x200 | 2400x1000x200 | 2400x1000x200 |
Overall size (mm) | 2500x1060x2650 | 2500x1060x2650 | 2900x1060x2650 |
Power of main motor (kW) | 3 | 4 | 4 |
Gross weight / net weight (kg) | 3650/3400 | 3650/3400 | 3850/3550 |
Packing dimension (mm) | 2600x1120x2600 | 2600x1120x2600 | 3000x1120x2600 |
A knee type milling machine is a fundamental machine tool distinguished by its vertically adjustable worktable mounted on a "knee" casting. This knee moves precisely up and down a fixed column via a screw mechanism, enabling accurate Z-axis positioning crucial for diverse milling operations.
The core principle involves a rotating milling cutter removing material from a workpiece secured to the table. The adjustable knee mechanism allows controlled vertical movement (Z-axis), while the table provides longitudinal (X-axis) and transverse (Y-axis) travel. This 3-axis control facilitates complex machining of flat, angular, and contoured surfaces.
Since their development in the late 19th century, knee-and-column mills revolutionized machining. The iconic Bridgeport design (1938) popularized the turret style. While CNC machining centers dominate high-volume production, knee mills remain indispensable for flexibility, ease of use, and cost-effectiveness in job shops, schools, and repair facilities worldwide.
At Fortune Pacific, we engineer durable, high-precision knee type milling machines for demanding applications. Explore our range of vertical mills, horizontal mills, and CNC-ready models designed to enhance your workshop's capabilities. Discover the ideal machine for your metalworking, prototyping, or toolmaking needs.
Keywords: Knee Type Milling Machine, Vertical Milling Machine, Horizontal Mill, Turret Mill, Knee-and-Column Mill, Milling Machine for Sale, Industrial Milling, Metalworking Equipment, Workshop Machinery, CNC Mill, Toolroom Mill, Precision Machining, Fortune Pacific, Machine Tool Manufacturer.